Question

A level is set on a station at a distance of 500 m from point a and 800 m from point

b. The staff readings on the staffs kept at point a and b are 1.55 m and 1.95 m respectively. Calculate the true difference in elevation of the point a and

b.

Answer 1

Answer:

Difference in elevation between points a and b = Staff reading at a - Staff reading at b

Staff reading at a = 1.55

Staff reading at b = 1.95

Difference in elevation= 1.95- 1.55= 0.45

The point a is 0.45m above point b.

Answer 2

Answer:

difference is 0.4 meter

Explanation:

in this question we are calculating the elevation between two points. those are point A and B

Reading At point A = 1.55 meters  

means the level is 1.55 meter higher then from the point of measure

Reading at Point B = 1.95 meters

means the level is 1.955 meter higher than from the point of measure.

now as we have to find the difference between them so we simply do subtraction. that is

B-A= 1.95-1.55 = 0.4

so the answer is 0.4 meters